Skip to main content
VulnerabilityPublished Updated

CVE-2026-44549: open-webui · Cross-site Scripting

Affects open-webuiSource GCVE Database

0
Compare

Not known to be exploited · CVSS 7.3 High : upgrade to 0.8.0 soon.

Data as of 12 Nov 2026, 00:19 UTC

CVSS 3.1 base score
7.3High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.17.3
EPSS
0.3% chance of exploitation in 30 days – higher than 25% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.8.0
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade open-webui to 0.8.0.

Affected software

ProductAffectedFixed in
open-webui open-webuiAffected
  • <0.8.0
Fixed in
  • 0.8.0

AI-suggested

Upgrade open-webui to version 0.8.0 or later, where this vulnerability is fixed. No additional mitigations are required once the update is applied.

Description

Open WebUI versions prior to 0.8.0 contain a cross-site scripting (XSS) vulnerability related to unsafe previewing of Excel file attachments. A crafted XLSX file can exploit the sheetjs function sheet_to_html to inject malicious HTML into the DOM without sanitization, leading to XSS. This vulnerability is fixed in version 0.8.0.

References

Community reviews

Loading reviews…